Hi,
I was wondering how I can create symbolic symmetric positive definite
(s.p.d.) Matrices.
I would like to get a symbolic (symbolic in the Q-matrix) quadratic form
def sospoly(x, varname):
N = x.shape[0]
Q = MatrixSymbol(varname, N, N)
p = (x.T * Matrix(Q) * x)[0]
return p, Q
where Q is s.p.d.
It would be enough to enforce symmetry actually ( making sure that Q[i,j]
== Q[j,i]).
If there is no "SymmetricMatrixSymbol" is there an easy way to create a
symbolic lower triangular matrix?
Thank you!
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